Synchronous Rectified Buck MOSFET Driver IC
PX3516
General Description
The PX3516 is a dual high speed driver designed to drive a
wide range of high-side and low-side power N-channel
MOSFET in synchronous rectified buck converters. When
combined with Infineon’s Primarion™ Controller Family of
Digital Multi-phase Controllers and N-channel MOSFET, the
PX3516 forms a complete core-voltage regulator solution
for advanced micro and graphics processors as well as
point-of-load applications.
The PX3516 provides the capability of driving the high-side
Applications:
•
Core power regulation for Intel® and AMD®
micropocessors server motherboard and
notebook market.
•
POL power converters for memory, DSP, FPGA,
ASIC
•
High current DC-DC converters
•
Memory
Features:
•
Dual MOSFET driver for synchronous rectified
bridge converters
gate and low-side gate with a single 5V supply for optimized
operation. This 5V supply with suitable decoupling can also
be used to provide the supply for the onboard logic. The
input voltage for the power stage can range from 5V up to
24V making the driver suitable for Notebook applications.
Shoot-through protection is integrated into the IC which
prevents both upper and lower MOSFET from conducting
simultaneously and to minimize dead time. The PX3516
has a minimized propagation delay from input to output with
fast rise and fall times.
The PX3516 driver also feature a three-state PWM input
which, when used together with Infineon’s Primarion™
Digital Controllers, eliminates the need for Schottky diodes
that are often used in systems to protect the load from
reversed output voltage events.
•
Single 5V supply for both logic and MOSFET
gate drive voltages for optimal efficiency
•
Fast rise and fall times supports switching rates
of up to 2MHz
•
Capable of sinking more than 4A peak current for
low switching losses
•
Shoot through protection
•
Three-state PWM input for output stage
shutdown
•
VCC under-voltage protection
•
Lead-free (RoHS compliant) TDSON-10-2
package
TDSON-10-2
10-pin DFN
(TOP VIEW)
UGATE
BOOT
N/C
PWM
GND
1
2
3
4
5
10
9
Type
PX3516
Package
PG-TDSON-10-2
Order info
PX3516ADDG-R4
PHASE
PVCC
N/C
VCC
LGATE
GND
8
7
6
2 of 12
PX3516
Synchronous Rectified Buck MOSFET Driver IC
PX3516
Absolute Maximum Ratings
Stresses above those listed in Table 1 “Absolute Maximum Ratings” may cause permanent damage to the device.
These are absolute stress ratings only and operation of the device is not implied at these or any other conditions in
excess of those given in the operational sections of this specification.
Table 1. Absolute Maximum Ratings
1
Description
V
VCC
V
PVCC
V
BOOT
V
BOOT
- V
PHASE
V
PHASE
V
PHASE
V
PWM
VCC supply voltage (DC)
PVCC supply voltage (DC)
BOOT voltage
BOOT to PHASE voltage
PHASE voltage, DC
PHASE voltage, pulsed
Input voltage
UGATE
LGATE
T
J
T
STG
Junction temperature
Storage temperature
Min
-0.3
-0.3
-0.3
-1
-1
-10
-0.3
V
PHASE
– 0.3
-0.3
-25
-55
Max
+7
+7
+30
+7
+30
+35
+5.5
V
BOOT
+ 0.3
V
PVCC
+ 0.3
150
150
Units
V
V
V
V
V
V
V
V
V
°C
°C
Conditions
Referenced to GND
Referenced to PHASE
DC
Pulse width < 30ns
1
At T
J
= 25° unless otherwise specified
C,
5 of 12
PX3516
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